SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for guenther-heckmann.com

Valid
Issued by (CA)
Let's Encrypt
Subject
guenther-heckmann.com
Valid from
Aug 3, 2026
Valid until
Nov 1, 2026 (43 days remaining)
Public key
RSA 2048-bit
Serial
068FEF257B6EFE0BF9A7CD941E39C7ECA0C5
SHA-256 fingerprint
30:10:2E:5F:E2:CC:6C:B3:24:9C:22:F9:37:5E:64:1C:CF:77:50:E6:2C:0D:A3:11:B2:96:E6:E5:A5:2C:42:91
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (3)
guenther-heckmann.com, webmail.guenther-heckmann.com, www.guenther-heckmann.com

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

This certificate has been served since Sep 18, 2026.

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DNS changes

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TLS certificate

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